12. Proposal to resolve issues: I imagine stating mediation/arbitration is given, what else can often be seen here?

A proposal to resolve issues would be similar to making an offer to settle. Remember, the case conference brief is not without prejudice, so you may wish to state "my offer to settle, on a without prejudice basis, is as follows:" if you want to make an offer.

21. what are examples of “other issues” to be reviewed–or, why you would give details here instead of 11?

Other issues are issues that fit in nowhere else.

"We rented an apartment and, while we did not get married and therefore there is no equalization of property, the day before we broke up the other side got drunk, threw up on my carpet and I had to pay $500 for it to be cleaned. I want half/all of that reimbursed!"

The answer to this may well be "no", unless there is something exceptional.